diff options
Diffstat (limited to 'arch/arc/plat-arcfpga')
| -rw-r--r-- | arch/arc/plat-arcfpga/Kconfig | 7 | ||||
| -rw-r--r-- | arch/arc/plat-arcfpga/Makefile | 2 | ||||
| -rw-r--r-- | arch/arc/plat-arcfpga/include/plat/irq.h | 2 | ||||
| -rw-r--r-- | arch/arc/plat-arcfpga/irq.c | 25 | ||||
| -rw-r--r-- | arch/arc/plat-arcfpga/platform.c | 100 |
5 files changed, 3 insertions, 133 deletions
diff --git a/arch/arc/plat-arcfpga/Kconfig b/arch/arc/plat-arcfpga/Kconfig index e27bb5cc3c1e..b9f34cf55acf 100644 --- a/arch/arc/plat-arcfpga/Kconfig +++ b/arch/arc/plat-arcfpga/Kconfig @@ -41,11 +41,4 @@ config ISS_SMP_EXTN -XTL (To enable CPU start/stop/set-PC for another CPU) It doesn't provide coherent Caches and/or Atomic Ops (LLOCK/SCOND) -config ARC_SERIAL_BAUD - int "UART Baud rate" - default "115200" - depends on SERIAL_ARC || SERIAL_ARC_CONSOLE - help - Baud rate for the ARC UART - endif diff --git a/arch/arc/plat-arcfpga/Makefile b/arch/arc/plat-arcfpga/Makefile index 4d1bddc34b5b..66fd0ecd68b3 100644 --- a/arch/arc/plat-arcfpga/Makefile +++ b/arch/arc/plat-arcfpga/Makefile @@ -8,5 +8,5 @@ KBUILD_CFLAGS += -Iarch/arc/plat-arcfpga/include -obj-y := platform.o irq.o +obj-y := platform.o obj-$(CONFIG_ISS_SMP_EXTN) += smp.o diff --git a/arch/arc/plat-arcfpga/include/plat/irq.h b/arch/arc/plat-arcfpga/include/plat/irq.h index 6adbc53c3a5b..2c9dea690ac4 100644 --- a/arch/arc/plat-arcfpga/include/plat/irq.h +++ b/arch/arc/plat-arcfpga/include/plat/irq.h @@ -24,6 +24,4 @@ #define IDU_INTERRUPT_0 16 #endif -extern void __init plat_fpga_init_IRQ(void); - #endif diff --git a/arch/arc/plat-arcfpga/irq.c b/arch/arc/plat-arcfpga/irq.c deleted file mode 100644 index d2215fd889c2..000000000000 --- a/arch/arc/plat-arcfpga/irq.c +++ /dev/null @@ -1,25 +0,0 @@ -/* - * ARC FPGA Platform IRQ hookups - * - * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/interrupt.h> -#include <plat/irq.h> - -void __init plat_fpga_init_IRQ(void) -{ - /* - * SMP Hack because UART IRQ hardwired to cpu0 (boot-cpu) but if the - * request_irq() comes from any other CPU, the low level IRQ unamsking - * essential for getting Interrupts won't be enabled on cpu0, locking - * up the UART state machine. - */ -#ifdef CONFIG_SMP - arch_unmask_irq(UART0_IRQ); -#endif -} diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index 61c7e5997387..1038949a99a1 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -22,115 +22,22 @@ #include <plat/smp.h> #include <plat/irq.h> -/*----------------------- Platform Devices -----------------------------*/ - -#if IS_ENABLED(CONFIG_SERIAL_ARC) -static unsigned long arc_uart_info[] = { - 0, /* uart->is_emulated (runtime @running_on_hw) */ - 0, /* uart->port.uartclk */ - 0, /* uart->baud */ - 0 -}; - -#if defined(CONFIG_SERIAL_ARC_CONSOLE) -/* - * static platform data - but only for early serial - * TBD: derive this from a special DT node - */ -static struct resource arc_uart0_res[] = { - { - .start = UART0_BASE, - .end = UART0_BASE + 0xFF, - .flags = IORESOURCE_MEM, - }, - { - .start = UART0_IRQ, - .end = UART0_IRQ, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct platform_device arc_uart0_dev = { - .name = "arc-uart", - .id = 0, - .num_resources = ARRAY_SIZE(arc_uart0_res), - .resource = arc_uart0_res, - .dev = { - .platform_data = &arc_uart_info, - }, -}; - -static struct platform_device *fpga_early_devs[] __initdata = { - &arc_uart0_dev, -}; -#endif /* CONFIG_SERIAL_ARC_CONSOLE */ - -static void arc_fpga_serial_init(void) -{ - /* To let driver workaround ISS bug: baudh Reg can't be set to 0 */ - arc_uart_info[0] = !running_on_hw; - - arc_uart_info[1] = arc_get_core_freq(); - - arc_uart_info[2] = CONFIG_ARC_SERIAL_BAUD; - -#if defined(CONFIG_SERIAL_ARC_CONSOLE) - early_platform_add_devices(fpga_early_devs, - ARRAY_SIZE(fpga_early_devs)); - - /* - * ARC console driver registers (build time) as an early platform driver - * of class "earlyprintk". However it needs explicit cmdline toggle - * "earlyprintk=ttyARC0" to be successfuly runtime registered. - * Otherwise the early probe below fails to find the driver - */ - early_platform_driver_probe("earlyprintk", 1, 0); - - /* - * This is to make sure that arc uart would be preferred console - * despite one/more of following: - * -command line lacked "console=ttyARC0" or - * -CONFIG_VT_CONSOLE was enabled (for no reason whatsoever) - * Note that this needs to be done after above early console is reg, - * otherwise the early console never gets a chance to run. - */ - add_preferred_console("ttyARC", 0, "115200"); -#endif /* CONFIG_SERIAL_ARC_CONSOLE */ -} -#else /* !IS_ENABLED(CONFIG_SERIAL_ARC) */ -static void arc_fpga_serial_init(void) -{ -} -#endif - static void __init plat_fpga_early_init(void) { pr_info("[plat-arcfpga]: registering early dev resources\n"); - arc_fpga_serial_init(); - #ifdef CONFIG_ISS_SMP_EXTN iss_model_init_early_smp(); #endif } -static struct of_dev_auxdata plat_auxdata_lookup[] __initdata = { -#if IS_ENABLED(CONFIG_SERIAL_ARC) - OF_DEV_AUXDATA("snps,arc-uart", UART0_BASE, "arc-uart", arc_uart_info), -#endif - {} -}; - static void __init plat_fpga_populate_dev(void) { - pr_info("[plat-arcfpga]: registering device resources\n"); - /* * Traverses flattened DeviceTree - registering platform devices - * complete with their resources + * (if any) complete with their resources */ - of_platform_populate(NULL, of_default_bus_match_table, - plat_auxdata_lookup, NULL); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } /*----------------------- Machine Descriptions ------------------------------ @@ -150,7 +57,6 @@ MACHINE_START(ANGEL4, "angel4") .dt_compat = aa4_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, - .init_irq = plat_fpga_init_IRQ, #ifdef CONFIG_ISS_SMP_EXTN .init_smp = iss_model_init_smp, #endif @@ -165,7 +71,6 @@ MACHINE_START(ML509, "ml509") .dt_compat = ml509_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, - .init_irq = plat_fpga_init_IRQ, #ifdef CONFIG_SMP .init_smp = iss_model_init_smp, #endif @@ -180,5 +85,4 @@ MACHINE_START(NSIMOSCI, "nsimosci") .dt_compat = nsimosci_compat, .init_early = NULL, .init_machine = plat_fpga_populate_dev, - .init_irq = NULL, MACHINE_END |